WO2012079502A1

WO2012079502A1 - Method and device for inputting data in multimedia service database on embedded device

Info

Publication number: WO2012079502A1
Application number: PCT/CN2011/083940
Authority: WO
Inventors: 劳佩锋; 张小田
Original assignee: 华为终端有限公司
Priority date: 2010-12-17
Filing date: 2011-12-14
Publication date: 2012-06-21
Also published as: EP2579168A1; US9311189B2; EP2579168B1; US20130103645A1; CN102142010A; EP2579168A4

Abstract

Disclosed are a method and a device for inputting data in a multimedia service database on an embedded device. The method comprises: when scanning multimedia files, storing generated directory information of the multimedia files in a RAM-DB, and in the scanning process, performing a RAM-DB to BAK-DB data backup operation; if the scanning process is interrupted, when continuing to scan after the scan interruption ends, copying the data in the BAK-DB into the RAM-DB, and continuing to scan, according to the existing data in the RAM-DB, multimedia files not yet scanned. Through the present invention, in a multimedia service system, two database files RAM-DB and BAK-DB are configured, avoiding the problem of multimedia file scan error caused by interruption, achieving the high efficiency of a multimedia service and the data persistence and reliability, and improving the user experience of the embedded multimedia service. Therefore, the present invention is highly practical.

Description

TECHNICAL FIELD The present invention relates to multimedia processing technologies, and in particular, to a method and device for data entry in a multimedia service database on an embedded device. Background technique

With the increased computing power and I/O performance of embedded devices, storage devices are used to store large amounts of multimedia files. More and more embedded devices can provide multimedia services, Secure Digital (SD) memory cards, USB Universal Serial Bus (USB) and external serial advanced technology accessories ( Serial Advanced Technology Attachment (hereinafter referred to as SATA) Permanent large-capacity storage such as hard disks is commonly used for external storage of embedded multimedia service devices.

The multimedia service program needs to scan the multimedia file and parse it to extract directory information such as the title of the multimedia file, the bookmark and description of the multimedia file, and the like. Directory information is used to publish multimedia content directories. The extracted directory information needs to be stored in a small database for easy browsing and retrieval by the client. This database is called a media service database.

When the media service database records the directory information of the multimedia file, it takes a lot of time to parse the multimedia file, store the directory information to the media service database, and query the database in the process of scanning the multimedia file. The length of scanning directly affects the customer experience. How to improve scanning performance is a focus of development of embedded multimedia services.

In the solution of the prior art, the memory file system is used to enter the data of the media service database, and the media service database is re-created each time the device is started, and the media files are re-scanned to generate directory information and entered into the media service database.

However, the prior art solution has the following disadvantages: The media service database is lost as the device is powered down, and the next time the media service database needs to be recreated and the media data is scanned, the user needs to It takes a long time to wait. The re-scanning may also change the ID of the directory information corresponding to the media file, causing the client's playlist and bookmark to be invalid, which brings a failed experience to the user.

In the solution of the prior art 2, the external storage device is used to store the media database, and the directory information in the media service database can be permanently saved. After the media file is added or deleted, only the media database is updated.

However, the prior art scheme is two. Media service database has poor read and write performance and affects service response speed. Moreover, the media database is easily damaged by the user's hot plugging of the external storage, which in turn causes the program to run abnormally.

According to the above-mentioned prior art solution, when the directory information of the multimedia file is entered into the media service database, the directory in the media service database may be caused due to an abnormal situation.

Causes abnormal programs and affects the customer experience. Summary of the invention

The invention discloses a method and a device for inputting data in a multimedia service database on an embedded device, which are used for ensuring the security and reliability of data stored in the media service database and improving the service of the user when scanning the multimedia file. Experience.

The present invention provides a method for data entry in a multimedia service database on an embedded device, including:

During the scanning of the multimedia file, the directory information of the generated multimedia file is stored in the RAM-DB, and during the scanning process, the data backup operation of the RAM-DB to the BAK-DB is performed; if the scanning process is interrupted, When scanning continues after the end of the scan interrupt, the data in the BAK-DB is copied to the RAM-DB, and the unscanned multimedia files are continuously scanned according to the data already in the RAM-DB.

The present invention also provides a device for entering data in a multimedia service database on an embedded device, including:

a scanning module, which is used to generate a multimedia file when scanning a multimedia file The recorded information is stored in the RAM-DB.

A backup module for performing a data backup operation of the RAM-DB to the BAK-DB during the scanning process; an interrupt processing module for interrupting the scanning process, and continuing to scan after the scanning interruption ends, the BAK-DB The data is copied to the RAM-DB, and the unscanned multimedia files are scanned according to the data already in the RAM-DB.

The invention configures two database files of RAM-DB and BAK-DB in the multimedia service system to avoid the error of scanning multimedia files due to interruption. The multimedia service is highly efficient, data persistent and reliable, and the user experience of embedded multimedia services is improved. It has high practicality.

DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present invention. For those skilled in the art, other drawings may be obtained based on these drawings without paying for creative labor.

1 is a flowchart of a method for data entry in a multimedia service database on an embedded device according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of an apparatus for recording data in a multimedia service database on an embedded device according to another embodiment of the present invention. detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

It should be understood that the described embodiments are only a part of the embodiments of the invention, and not all of the embodiments. Those of ordinary skill in the art are not creative based on the embodiments of the present invention. All other embodiments obtained under the premise of labor are within the scope of the invention. FIG. 1 is a schematic diagram of a method for entering data in a multimedia service database on an embedded device according to an embodiment of the present invention, to ensure security and reliability of data entered in a media service database, so as to ensure that the client can be accurate and effective. The data in the media service database is obtained to ensure the efficiency and reliability of the multimedia service and improve the user experience of the embedded multimedia service.

In the embodiment of the present invention, by optimizing the media database entry scheme, the efficiency, data persistence and reliability of the multimedia service database embedded on the device are realized, and the user experience of the embedded multimedia service is improved.

In the technical solution of the embodiment, two database files are needed, one is a database file located in the memory file system, and is a random access memory database (RAM-DB); the other is located in the plug-in The backup database file in the memory is the backup database (hereinafter referred to as BAK-DB). RAM-DB uses random access memory, which features high read/write performance and good reliability, but power loss will disappear. BAK-DB is a plug-in memory. After power-off, the data can still be stored permanently, but the read/write performance is poor and the reliability is poor.

In this embodiment, when the embedded multimedia service program performs the initial scanning of the multimedia file in the external storage memory, it will become a RAM-DB, and store the generated directory information of the multimedia file in the RAM-DB, and at regular intervals. Backup time interval, or each time a certain amount of data is added, the data in the RAM-DB is backed up to the BAK-DB, and the backup time interval can be preset according to specific needs, for example, 5 seconds or 10 seconds can be set. Just perform a backup of RAM-DB to BAK-DB. After scanning all the multimedia files, back up the data in R A M - D B to BAK-DB as a whole.

If an unexpected interruption occurs during the scanning process, such as a device power failure restart, or the media server restarts, or plugged in the external storage. Then, after the end of the interrupt, the data in the BAK-DB will be restored to the RAM-DB. In the process of scanning the multimedia file, if the directory information corresponding to the multimedia file is already present in the media service database, the multimedia file is skipped. After the scan ends, the corresponding multimedia files are not recorded in the media service database but are not present in the hard disk. To record the information, you need to delete all of them, and back up the RAM-DB to BAK-DB again. This makes it possible to implement a disaster backup of the media service database during the scanning process.

Based on the above-mentioned "RAM-DB" and "BAK-DB", the method for storing data in the database provided by the present invention is as follows:

Step 1 1. During the scanning of the multimedia file, the directory information of the generated multimedia file is stored in the RAM-DB, and during the scanning process, the data backup operation of the RAM-DB to the BAK-DB is performed.

When scanning a multimedia file in the external storage, when scanning a multimedia file, it is also possible to detect whether the directory information of the multimedia file already exists in the BAK-DB; if yes, the multimedia file has been previously After scanning, the directory information of the multimedia file is copied from the BAK-DB to the RAM-DB, and the scanning of the multimedia file can be skipped, and the unscanned multimedia file can be scanned, thereby being connected. Previous scan. If no, it is stated that the multimedia file is not scanned before, and the storage space needs to be divided in the RAM-DB to store the directory information of the multimedia file.

Therefore, after copying the directory information of the multimedia file from the BAK-DB to the RAM-DB, in the process of scanning the multimedia file, it is also required to detect whether the directory information corresponding to the multimedia file exists in the RAM-DB, if present If the multimedia file has been scanned, skip the scanning operation on the multimedia file; if not, parse the multimedia file and write the generated corresponding directory information into the RAM-DB. The RAM-DB is established when the multimedia service program is scanned for the first time. When scanning a plurality of multimedia files, each time a multimedia file is scanned, a certain storage space needs to be allocated in the RAM-DB to store the directory information corresponding to the multimedia file. .

In this embodiment, when the multimedia file is scanned, the multimedia file is parsed and the generated corresponding multimedia directory information is written into the RAM-DB, and the data in the RAM-DM can be backed up according to the preset scan backup time interval. BAK-DB. For example, for important multimedia files, you can set a backup from 1 second to 3 seconds. For multimedia files that are not very important, you can set a backup from 5 seconds to 10 seconds. Alternatively, it is also possible to perform a backup every time a certain amount of data of the multimedia directory information is added, and check whether the data amount of the multimedia directory information added in the RAM-DB reaches a preset value, and if so, perform a RAM-DB once. Data backup operation to BAK-DB.

Step 12: If an interruption occurs in the scanning process, the data in the BAK-DB is copied to the RAM-DB when the scanning is continued after the scanning interruption ends, and the unscanning is continued according to the data existing in the RAM-DB. The multimedia file is scanned.

If an interrupt occurs, the previous scan needs to be continued after the interrupt is completed. For example, if there are 800 files in a plug-in memory and an interrupt occurs suddenly when scanning to the 101st, the scan generates the directory information corresponding to the first 100 multimedia files, because the RAM has been used in the previous scanning process. The data in the DB is backed up to the BAK-DB, and after the interrupt is completed, the data in the BAK-DB is restored to the RAM-DB, and the RAM-DB has the directory information of the 100 multimedia files generated by the previous scan. This allows the previous scan to be continued after the end of the interrupt, and scanning continues from the 101st multimedia file. This improves the scanning speed of the multimedia files in the external storage in the event of an emergency, and avoids a reduction in user experience due to sudden interruptions.

According to the above method, the disaster backup during the multimedia file scanning process is realized, so that the scanning of the multimedia file is not affected by the interruption.

Further, when the multimedia file is changed, such as a hard disk or an external memory, a part of the multimedia file is added or a part of the multimedia file is deleted. When the multimedia file is scanned again, the directory information in the multimedia service database needs to be updated.

At this time, the processing method of the data in the multimedia service data block is as follows: when it is detected that a new multimedia file is scanned, monitoring the generated directory information of the new multimedia file; and catalog information of the new multimedia file. The update is stored in the RAM-DB and the data in the RAM-DB is backed up into the BAK-DB.

After the multimedia file scanning is completed, the generated multimedia directory information is stored in the multimedia service database. Some multimedia files may have been deleted or some multimedia files may have been changed. After the scanning is finished, it is necessary to clean up the related multimedia files that do not exist in the multimedia service database. Directory information; and the entire data in the RAM-DB is backed up to BAK-DB. For example, a multimedia file is deleted from the external storage before scanning, and the corresponding directory information is included in the multimedia service database. After the scanning is completed, the directory information needs to be deleted to prevent the client program from reading the directory. Information, but the service of the corresponding multimedia file is not requested.

When performing the backup of the RAM-DB to the BAK-DB, the following method can be used: When the directory information of the multimedia file is stored in the RAM-DB, it is detected whether the amount of data added in the RAM-DB reaches a preset value. Back up the amount of data, and if so, perform a data backup of RAM-DB to BAK-DB. For example, when scanning multimedia files, you can set a RAM-DB without adding 100k data, and then perform a backup to avoid frequent backup operations waste system resources.

The method for storing data in the multimedia service database of the embodiment of the present invention has a wide range of applications, for example, in the following scenarios: a home gateway having a Digital Living Network Alliance (DLNA) media server, usually USB hard disk is used as external storage device; smartphone with itunes server (digital media playback application server) usually uses built-in SD memory card or micro hard disk as external storage; set-top box supporting DLNA media server, usually with built-in SATA hard disk or external connection The USB hard disk is an external memory.

In the above application scenario, the method for entering data in the media service database is similar to the above method, and details are not described herein again.

In this embodiment, two database files of RAM-DB and BAK-DB are configured in the multimedia service system, and the reading speed and storage stability of the two database files can be complemented by advantages and disadvantages, and data backup of the multimedia service database can be realized at the same time. Avoid errors caused by multimedia file scanning due to interruption. The efficiency, data persistence and reliability of multimedia services are realized, and the user experience of embedded multimedia services is improved. Has a high practicality.

FIG. 2 is a schematic structural diagram of an apparatus for inputting data in a multimedia service database on an embedded device according to another embodiment of the present disclosure, where the device includes:

The scanning module 21 is configured to store, in the scanning of the multimedia file, the directory information of the generated multimedia file in the RAM-DB, The backup module 22 is configured to perform a data backup operation of the RAM-DB to the BAK-DB during the scanning process;

The interrupt processing module 23 is configured to interrupt the scanning process. When the scanning is continued after the scanning interrupt ends, the data in the BAK-DB is copied to the RAM-DB, and the data is continued according to the existing data in the RAM-DB. Scanned multimedia files are scanned.

When scanning a multimedia file, for a previously scanned multimedia file, you can skip the scanning operation to directly scan the unscanned multimedia file. The scanning module 21 is further configured to: when scanning a multimedia file, detecting whether directory information of the multimedia file already exists in the BAK-DB; if yes, copying the directory information of the multimedia file into the RAM-DB; And skipping the scanning operation on the multimedia file; otherwise, scanning the multimedia file and writing the generated directory information of the multimedia file into the RAM-DB.

After copying the directory information of the multimedia file from the BAK-DB to the RAM-DB, in the process of scanning the multimedia file, it is also required to detect whether the directory information corresponding to the multimedia file exists in the RAM-DB, if any, If the multimedia file has been scanned, the scanning operation on the multimedia file is skipped; if not, the multimedia file is parsed and the generated corresponding directory information is written into the RAM-DB. The scanning module 21 is further configured to: when scanning a multimedia file, detecting whether directory information of the multimedia file is already present in the RAM-DB, and if yes, skip scanning operation on the multimedia file; otherwise, scanning The multimedia file writes the generated directory information of the multimedia file into the RAM-DB.

When backing up data, you can use the method of backing up by time, or you can use the method of backing up by data volume. The backup module 22 is configured to detect whether the amount of data of the multimedia file directory information added in the RAM-DB reaches a preset value, and if so, perform a data backup operation of the RAM-DB to the BAK-DB. Alternatively, the backup module 22 is configured to perform a data backup operation of the RAM-DB to the BAK-DB according to a preset scan backup time interval.

In addition, after the multimedia file scanning is completed, the generated multimedia directory information is stored in the multimedia service database. Due to the possibility of deleting some multimedia files or changing some multimedia File. After the scanning is finished, the related directory information of the multimedia file that does not exist in the multimedia service database needs to be cleaned up. The device further includes: a deleting module 24, configured to delete directory information of the unscanned multimedia file in the media database after the scanning of the multimedia file is completed.

It will be understood by those of ordinary skill in the art that the drawings are only a schematic representation of one embodiment, and the modules or processes in the drawings are not necessarily required to practice the invention.

It will be understood by those skilled in the art that the modules in the apparatus in the embodiments may be distributed in the apparatus of the embodiment according to the embodiment, or may be correspondingly changed in one or more apparatuses different from the embodiment. The modules of the above embodiments may be combined into one module, or may be further split into a plurality of sub-modules.

The serial numbers of the embodiments of the present invention are merely for the description, and do not represent the advantages and disadvantages of the embodiments.

It will be apparent to those skilled in the art that the embodiments of the present invention can be implemented by means of software plus the necessary general hardware platform. Based on such understanding, the technical solution of the embodiments of the present invention may be embodied in the form of a software product in essence or in the form of a software product, and the computer software product may be stored in a storage medium, such as a ROM/RAM. A disk, an optical disk, or the like, includes instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform the methods described in various embodiments of the embodiments of the present invention.

The above specific embodiments are not intended to limit the present invention, and any modifications, equivalents, improvements, etc., which are included in the present invention, should be included in the present invention without departing from the principles of the present invention. Within the scope of protection.

Claims

Claim

A method for data entry in a multimedia service database on an embedded device, comprising:

During the scanning of the multimedia file, the directory information of the generated multimedia file is stored in the random storage database RAM-DB, and during the scanning process, the data backup operation of the RAM-DB to the backup database BAK-DB is performed;

If an interruption occurs during the scanning process, the data in the BAK-DB is copied to the RAM-DB when the scanning is continued after the scanning interruption ends, and the unscanned multimedia file is continued according to the data already in the RAM-DB. scanning.

2. The method according to claim 1, further comprising:

When scanning a multimedia file, detecting whether directory information of the multimedia file already exists in the BAK-DB;

If yes, copy the directory information of the multimedia file to the RAM-DB;

Otherwise, the multimedia file is scanned and the generated directory information of the multimedia file is written into the RAM-DB.

3. The method according to claim 2, further comprising:

When scanning a multimedia file, detecting whether directory information of the multimedia file is already present in the RAM-DB,

If yes, skip the scanning operation on the multimedia file;

4. The method according to claim 1, wherein the data backup operation of the RAM-DB to the BAK-DB is performed, including:

It is detected whether the data amount of the multimedia file directory information added in the RAM-DB reaches a preset value, and if so, a data backup operation of the RAM-DB to the BAK-DB is performed once.

5. The method according to claim 1, wherein the multimedia file is parsed and generated After the corresponding multimedia directory is written into the RAM-DB, it also includes:

Perform data backup operations from RAM-DB to BAK-DB according to the preset scan backup interval.

6. The method according to claim 1, further comprising:

After the scanning of the multimedia file is completed, in the multimedia service database, the directory information of the unscanned multimedia file is deleted.

7. A device for entering data in a multimedia service database on an embedded device, comprising:

a scanning module, configured to store, in the scanning of the multimedia file, the directory information of the generated multimedia file in the random access memory database RAM-DB,

a backup module for performing a data backup operation of the RAM-DB to the backup database BAK-DB during the scanning process;

The interrupt processing module is used to interrupt the scanning process. When the scanning is continued after the scanning interrupt ends, the data in the BAK-DB is copied to the RAM-DB, and the unscanning is continued according to the data already in the RAM-DB. The multimedia files are scanned.

8. Apparatus according to claim 7 wherein:

The scanning module is further configured to: when scanning a multimedia file, detecting whether directory information of the multimedia file already exists in the BAK-DB; if yes, copying the directory information of the multimedia file into the RAM-DB Otherwise, the multimedia file is scanned and the generated directory information of the multimedia file is written into the RAM-DB.

9. Apparatus according to claim 8 wherein:

The scanning module is further configured to: when scanning a multimedia file, detecting whether directory information of the multimedia file is already present in the RAM-DB, and if yes, skip scanning operation on the multimedia file; otherwise, Scan the multimedia file and write the generated directory information of the multimedia file

RAM-DB.

10. Apparatus according to claim 7 wherein:

The backup module is configured to detect whether the data amount of the multimedia file directory information added in the RAM-DB reaches a preset value, and if yes, perform a data backup operation of the RAM-DB to the BAK-DB.

1 1. Apparatus according to claim 7 wherein:

The backup module is configured to perform a data backup operation of the RAM-DB to the BAK-DB according to a preset scan backup time interval.

12. The device according to claim 7, further comprising:

The deletion module is configured to delete the directory information of the unscanned multimedia file in the media database after the scanning of the multimedia file is completed.